JP3956334B2 - Retractable seat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a retractable seat that can be used safely by securely locking the seat to a vehicle body when the seat is used and when the seat is not used.
[0002]
[Prior art]
Conventionally, as a retractable seat structure of this type, as disclosed in, for example, Japanese Patent Application Laid-Open No. 11-48840 and Japanese Utility Model Laid-Open No. 5-40029, a seat including a seat cushion and a seat back is provided at the rear of the seat. There is known one that is swung in a storage recess formed in a vehicle body floor and stored. These seats are of a bench type, and in a use state of the seat, the seats are fixed by engaging catchers provided on both sides of the seat cushion with strikers provided on the side of the body.
[0003]
However, in these seats, the catcher is simply engaged with the striker and may be used in an insufficiently engaged state. On the other hand, the catcher is reliably engaged with the striker. Checking whether or not there is a problem that it takes time and is inconvenient. Further, when the seat is a 50:50 split sheet, for example, it is necessary to attach a leg portion in order to ensure a certain height of the seating surface in the split portion. Although it is necessary to perform locking securely, there is a problem that the simple engagement mechanism of the catcher and the striker cannot cope with it.
[0004]
[Problems to be solved by the invention]
The present invention solves the conventional problems as described above, and when the seat is not in use, the seat cushion and the seat back can be easily stored in a storage recess formed in the vehicle body, and the leg portion. The present invention has been completed for the purpose of providing a retractable seat that can exhibit excellent safety without being used in an insufficiently engaged state on the vehicle body floor side.
[0005]
[Means for Solving the Problems]
The retractable seat of the present invention made to solve the above-mentioned problems is a seat comprising a seat cushion having legs that can be engaged and disengaged by a lock mechanism on a vehicle body floor, and a seat back that can be tilted forward toward its seating surface. When not in use, the seat cushion and seat back are overlapped and stored in a storage recess formed in the vehicle body floor behind the seat by a link member that connects the seat side and the vehicle body floor side. In a retractable seat that allows the leg to be locked onto the vehicle floor by returning it to its old position, the lock mechanism will unlock the vehicle floor and the leg unless the seat back in the standing state is tilted forward. If it is not in the state where the forward tilt detection control means and the leg are locked by the lock mechanism, That is provided with the upright detection controller that prevents the standing operation of the seat back, the upright detection control means is connected to the release arm of the reclining mechanism, when the locking mechanism is in the unlocked state, the release arm is locked position It is characterized by being held .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The drawings show the case where the present invention is applied to a rear seat for an automobile that can be divided into 6: 4. Reference numeral 1 denotes a leg portion 6, 7 that can be engaged and disengaged by a lock mechanism as described later on the vehicle body floor 20. And a seat back 1b that can be raised and lowered by a reclining mechanism 40, which will be described later. The seat 1 has leg portions 6 and 7 that can be folded when used. The seat back 1b is raised at the rear of the seat cushion 1a while being locked to the side of the seat cushion 1a. When not in use, the seat back 1b is seated on the seat cushion 1a by unlocking the leg and the vehicle body floor. The superposed seat 1 is brought into a superposed state that is moved forward toward the surface, and the superposed seat 1 is connected to the rear portion of the seat cushion 1a and the vehicle body floor 20 side. Although it can be stored in the storage recess 2 formed in the vehicle body floor 20 behind the seat via the link member 10, in the present invention, the vehicle body by the lock mechanism is required unless the seat back 1b in the standing state is moved forward. The forward tilt detection control means 30 that prevents the floor 20 and the legs 6 and 7 from being unlocked, and the seat back that is in an overlapped state unless the legs 6 and 7 are locked by the lock mechanism There is a feature in that the standing detection control means 50 is provided so that the standing operation 1b cannot be performed.
[0007]
The legs 6 and 7 are engaged and fixed to the strikers 6a and 7a provided on the vehicle body floor 20 when used as seats, and can be folded into the seat cushion 1a so as not to get in the way when the seats are stored. It is configured as follows. Further, in the illustrated example, the leg portions 6 and 7 are provided at the front and rear positions of the bottom portion of the seat cushion 1a, but the rear leg portion 7 is not necessarily required.
[0008]
With such a structure, when the seat back 1b is not tilted forward, that is, when the seat back is in a seatable state, the leg portions 6 and 7 can be operated even when the operation of releasing the locked state of the leg portions 6 and 7 is performed. 7 is not released. On the other hand, when the overlapped sheet 1 stored in the storage recess 2 is returned to the old position as it is, the seat back 1b is not moved unless the leg portions 6 and 7 are securely locked. Since it cannot be raised, the safety of the seat 1 is extremely high.
[0009]
As shown in FIGS. 4 and 6, the forward tilt detection control means 30 is constructed by assembling a control lever 31, an open lever 32, and a cancel lever 33 to the bracket 30a. This control lever 31 is for making the locked state of the legs 6 and 7 releasable, and is mounted so as to be rotatable about a shaft 35a. An L-shaped long hole 31a branched in the line direction is provided. The open lever 32 is connected to the lock release mechanism of the legs 6 and 7 and is configured to release the lock of the legs 6 and 7 by rotating clockwise around the shaft 35a. Further, a long hole 32a is provided in the normal direction to the shaft 35a. Further, the cancel lever 33 is configured to be pulled by a cable when the seat back 1b is tilted forward and rotate clockwise around the shaft 35b, and a long hole 33a is provided in the circumferential direction with respect to the shaft 35a. Is provided. The control lever 31, the open lever 32 and the cancel lever 33 are integrated with the bracket 30a by inserting a cancel pin 34 into each of the long holes 31a, 32a and 33a.
[0010]
FIG. 5 shows a reclining mechanism 40 that tilts the seat back 1 b forward. The reclining mechanism 40 is configured to be interlocked with the forward tilt detection control means 30.
That is, when the reclining mechanism 40 is operated and the seat back 1b is moved forward, the ratchet 41 rotates around the shaft 40a, and the seat back pin 42 provided on the ratchet 41 rotates the seat back link 43 counterclockwise. It operates to pull the cancel lever 33 of the forward tilt detection control means 30 connected by the cable 44. When the cancel lever 33 is pulled in this manner, the cancel lever 33 rotates clockwise, and the forward tilt detection control means 30 can be operated.
[0011]
Next, the operation of the forward tilt detection control means 30 as described above will be described.
As shown in FIG. 5, when the seat back 1b is moved forward by the reclining mechanism 40, the ratchet 41 rotates counterclockwise, the seat back pin 42 rotates the seat back link 43 counterclockwise, and the cable 44 is pull. As a result, as shown in FIG. 6, the cancel lever 33 of the forward tilt detection control means 30 is pulled to rotate around the shaft 35b, and at the same time, the cancel pin 34 is guided to the long hole 33a to the shaft 35a. Move in the normal direction. Next, as shown in FIG. 7, by operating the control lever 31, the cancel pin 34 is pushed by the end surface in the normal direction of the long hole 31 a, and the cancel pin 34 is a method of the long hole 32 a provided in the open lever 32. Press the line end face. As a result, the open lever 32 rotates clockwise about the shaft 35a, and pulls the cable 45 to release the locked state of the legs 6 and 7.
[0012]
When the seat back 1b is not moved forward, the cancel pin 34 held by the cancel lever 33 is positioned in the circumferential direction of the long hole 31a provided in the control lever 31 as shown in FIG. Therefore, even if the control lever 31 is operated, it is impossible to push the cancel pin 34 in the circumferential direction of the long hole 31a. Therefore, even if the control lever 31 is operated when the seat back 1b is not moved forward, the open lever 32 cannot be rotated clockwise, and the locked state of the legs 6 and 7 cannot be released. is there.
[0013]
On the other hand, the standing detection control means 50 controls the reclining mechanism 40 and the locked state of the legs 6 and 7 in conjunction with each other as shown in FIGS. A lock mechanism comprising leg portions 6 and 7 provided at the bottom of the overlapping sheet 1 returned to the old position from the storage recess 2 formed at 20 and the strikers 6a and 7a provided on the vehicle body floor 20 is provided. The seat back 1b cannot be raised when it is not securely locked.
More specifically, the front leg 6 is provided with a latch 61 that engages with the striker 6 a and a pole 62 that meshes with the latch 61, and the operation of the pole 62 is reclined by the link 63 through the cable 46. It is configured to be transmitted to a guard link 47 provided at 40. On the other hand, the rear leg portion 7 is provided with a latch 71 that engages with the striker 7a and a pole 72 that meshes with the latch 71. The two links 73 and 74 allow the operation of the pole 72 through the cable 49. It is configured to be transmitted to a guard link 47 provided in the reclining mechanism 40.
[0014]
Although the reclining mechanism 40 is as described above, as shown in FIG. 9, a stopper pin 48 a is further provided on the release arm 48 that operates the ratchet 41, and this stopper pin 48 a is connected to the guard link 47. It is configured to be lockable.
[0015]
Next, the operation of the standing detection control means 50 as described above will be described.
First, when the leg portion 6 is not engaged with the striker 6a, as shown in FIG. 9, the pole 62 rides on the convex portion of the latch 61. In this state, the link 63 is connected to the cable. The guard link 47 is pulled through 46. Similarly, when the leg portion 7 is not engaged with the striker 7a, the pole 72 rides on the convex portion of the latch 71. In this state, the links 73 and 74 pass the guard link 47 through the cable 49. Will be pulled. Due to this tensile force, the guard link 47 is rotated clockwise about the shaft 40b. Here, in order to raise the seat back 1b, it is necessary to unlock the reclining mechanism 40, and to release the release arm 48. It will be rotated counterclockwise. However, since the guard link 47 is in a pulled state, the progress of the stopper pin 48a is obstructed, and the unlocking operation of the reclining mechanism 40 cannot be performed. As a result, when the leg portions 6 and 7 are not engaged with either or both of the strikers 6a and 7a, the seat back 1b cannot be raised.
[0016]
On the other hand, when the leg portion 6 is engaged with the striker 6a, as shown in FIG. 10, the pole 62 is engaged with the concave portion of the latch 61. In this state, the cable 46 is free. The guard link 47 is not pulled. Similarly, when the leg portion 7 is engaged with the striker 7a, the pole 72 is engaged with the concave portion of the latch 71. In this state, the cable 46 is free and does not pull the guard link 47. Here, when the release arm 48 of the reclining mechanism 40 is rotated counterclockwise to raise the seat back 1b, the guard link 47 does not interfere with the progress of the stopper pin 48a. The unlocking operation can be performed reliably. Thus, when the leg portions 6 and 7 are engaged with both the strikers 6a and 7a, the seat back 1b can be raised.
[0017]
In addition, the seat 1 is formed at a position where the back surface of the seat back 1b is substantially at the same height as the vehicle body floor 20 when stored, and a flat and vast luggage space can be formed on the vehicle body floor 20. Further, the link member 10 described above is formed integrally with a U-shaped frame when the whole is viewed in plan (see FIG. 2), and the link member is a rod-like body as in the prior art, Since the rear portion of the lower surface of the seat cushion 1a is not simply connected to the front portion of the bottom surface of the storage recess 2, the seat 1 can be lifted in a stable state without causing rotation or unevenness when the seat 1 is moved. It is configured to be able to.
[0018]
1, the seat back 1b of the seat 1 in a state where it can be seated as needed is brought forward and overlapped, as shown in FIG. However, in the present invention, since the forward tilt detection control means 30 is provided, the seat back 1b is not tilted forward. The leg portions 6 and 7 provided at the lower part of the seat cushion 1a cannot be unlocked, and the standing detection control means 50 is provided, so that the overlapping sheet 2 stored in the storage recess 2 in the overlapping state is provided. Even if it is returned to the old position as it is, it is controlled so that the seat back 1b cannot be raised unless the legs 6 and 7 are locked, and the legs 6 and 7 can be seated while being unstable. Safety switching operation without being able to be is to be ensured.
[0019]
【The invention's effect】
As is clear from the above description, the present invention allows the seat cushion and the seat back to be easily stored in the storage recess formed in the vehicle body when the seat is not used, and the legs are mounted on the vehicle floor. It is possible to exhibit excellent safety without being used in an insufficiently engaged state.
Accordingly, the present invention contributes greatly to the development of the industry as a retractable seat that eliminates the conventional problems.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
FIG. 2 is a perspective view of a main part showing an embodiment of the present invention.
FIG. 3 is a schematic explanatory view showing a forward tilt detection control means.
FIG. 4 is an exploded view showing forward tilt detection control means.
FIG. 5 is a schematic view showing a reclining mechanism.
FIG. 6 is an explanatory view showing an operating state of a forward tilt detection control means.
FIG. 7 is an explanatory view showing an operating state of a forward tilt detection control means.
FIG. 8 is an explanatory diagram showing an operating state of the forward tilt detection control means.
FIG. 9 is an explanatory view showing an operating state of the standing control means.
FIG. 10 is an explanatory view showing an operating state of the standing control means.
[Explanation of symbols]
1 sheet
1a Seat cushion
1b Seat back 2 Storage recess 2
6 Leg 7 Leg
10 Link member
20 body floor
30 Forward tilt detection control means
50 Standing detection control means

Claims (2)

A seat cushion with legs that can be engaged and disengaged by a locking mechanism on the vehicle body floor and a seat back that can be tilted forward toward its seating surface. It can be stored in the storage recess formed on the vehicle body floor behind the seat by a link member that connects the vehicle and the vehicle body floor side, and when re-used, it can be returned to the old position with the overlapped state so that the leg can be locked on the vehicle body floor In the retractable seat, the front tilt detection control means prevents the lock mechanism from unlocking the vehicle floor and the leg unless the seat back in the standing state is tilted forward, and the leg is locked by the lock mechanism. Standing detection control that prevents the seat back from standing up if it is not Provided with a stage, and the standing detection control means is connected to the release arm of the reclining mechanism, stowage type seat locking mechanism in the case of the unlocked state, characterized in that the release arm is to be held in the locked position .   The retractable seat according to claim 1, wherein the forward tilt detection control means operates in conjunction with a reclining mechanism of the seat back.

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